sound/pci/ca0106/ca0106_proc.c - kernel/bruno - Git at Google

 /*
  *  Copyright (c) 2004 James Courtier-Dutton <James@superbug.demon.co.uk>
  *  Driver CA0106 chips. e.g. Sound Blaster Audigy LS and Live 24bit
  *  Version: 0.0.18
  *
  *  FEATURES currently supported:
  *    See ca0106_main.c for features.
  *
  *  Changelog:
  *    Support interrupts per period.
  *    Removed noise from Center/LFE channel when in Analog mode.
  *    Rename and remove mixer controls.
  *  0.0.6
  *    Use separate card based DMA buffer for periods table list.
  *  0.0.7
  *    Change remove and rename ctrls into lists.
  *  0.0.8
  *    Try to fix capture sources.
  *  0.0.9
  *    Fix AC3 output.
  *    Enable S32_LE format support.
  *  0.0.10
  *    Enable playback 48000 and 96000 rates. (Rates other that these do not work, even with "plug:front".)
  *  0.0.11
  *    Add Model name recognition.
  *  0.0.12
  *    Correct interrupt timing. interrupt at end of period, instead of in the middle of a playback period.
  *    Remove redundent "voice" handling.
  *  0.0.13
  *    Single trigger call for multi channels.
  *  0.0.14
  *    Set limits based on what the sound card hardware can do.
  *    playback periods_min=2, periods_max=8
  *    capture hw constraints require period_size = n * 64 bytes.
  *    playback hw constraints require period_size = n * 64 bytes.
  *  0.0.15
  *    Separate ca0106.c into separate functional .c files.
  *  0.0.16
  *    Modified Copyright message.
  *  0.0.17
  *    Add iec958 file in proc file system to show status of SPDIF in.
  *  0.0.18
  *    Implement support for Line-in capture on SB Live 24bit.
  *
  *  This code was initially based on code from ALSA's emu10k1x.c which is:
  *  Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
  *
  *   This program is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
  *   the Free Software Foundation; either version 2 of the License, or
  *   (at your option) any later version.
  *
  *   This program is distributed in the hope that it will be useful,
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *   GNU General Public License for more details.
  *
  *   You should have received a copy of the GNU General Public License
  *   along with this program; if not, write to the Free Software
  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  *
  */
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/moduleparam.h>
 #include <sound/core.h>
 #include <sound/initval.h>
 #include <sound/pcm.h>
 #include <sound/ac97_codec.h>
 #include <sound/info.h>
 #include <sound/asoundef.h>
 #include <asm/io.h>

 #include "ca0106.h"


 #ifdef CONFIG_PROC_FS

 struct snd_ca0106_category_str {
 	int val;
 	const char *name;
 };

 static struct snd_ca0106_category_str snd_ca0106_con_category[] = {
 	{ IEC958_AES1_CON_DAT, "DAT" },
 	{ IEC958_AES1_CON_VCR, "VCR" },
 	{ IEC958_AES1_CON_MICROPHONE, "microphone" },
 	{ IEC958_AES1_CON_SYNTHESIZER, "synthesizer" },
 	{ IEC958_AES1_CON_RATE_CONVERTER, "rate converter" },
 	{ IEC958_AES1_CON_MIXER, "mixer" },
 	{ IEC958_AES1_CON_SAMPLER, "sampler" },
 	{ IEC958_AES1_CON_PCM_CODER, "PCM coder" },
 	{ IEC958_AES1_CON_IEC908_CD, "CD" },
 	{ IEC958_AES1_CON_NON_IEC908_CD, "non-IEC908 CD" },
 	{ IEC958_AES1_CON_GENERAL, "general" },
 };


 static void snd_ca0106_proc_dump_iec958( struct snd_info_buffer *buffer, u32 value)
 {
 	int i;
 	u32 status[4];
 	status[0] = value & 0xff;
 	status[1] = (value >> 8) & 0xff;
 	status[2] = (value >> 16)  & 0xff;
 	status[3] = (value >> 24)  & 0xff;

 	if (! (status[0] & IEC958_AES0_PROFESSIONAL)) {
 		/* consumer */
 		snd_iprintf(buffer, "Mode: consumer\n");
 		snd_iprintf(buffer, "Data: ");
 		if (!(status[0] & IEC958_AES0_NONAUDIO)) {
 			snd_iprintf(buffer, "audio\n");
 		} else {
 			snd_iprintf(buffer, "non-audio\n");
 		}
 		snd_iprintf(buffer, "Rate: ");
 		switch (status[3] & IEC958_AES3_CON_FS) {
 		case IEC958_AES3_CON_FS_44100:
 			snd_iprintf(buffer, "44100 Hz\n");
 			break;
 		case IEC958_AES3_CON_FS_48000:
 			snd_iprintf(buffer, "48000 Hz\n");
 			break;
 		case IEC958_AES3_CON_FS_32000:
 			snd_iprintf(buffer, "32000 Hz\n");
 			break;
 		default:
 			snd_iprintf(buffer, "unknown\n");
 			break;
 		}
 		snd_iprintf(buffer, "Copyright: ");
 		if (status[0] & IEC958_AES0_CON_NOT_COPYRIGHT) {
 			snd_iprintf(buffer, "permitted\n");
 		} else {
 			snd_iprintf(buffer, "protected\n");
 		}
 		snd_iprintf(buffer, "Emphasis: ");
 		if ((status[0] & IEC958_AES0_CON_EMPHASIS) != IEC958_AES0_CON_EMPHASIS_5015) {
 			snd_iprintf(buffer, "none\n");
 		} else {
 			snd_iprintf(buffer, "50/15us\n");
 		}
 		snd_iprintf(buffer, "Category: ");
 		for (i = 0; i < ARRAY_SIZE(snd_ca0106_con_category); i++) {
 			if ((status[1] & IEC958_AES1_CON_CATEGORY) == snd_ca0106_con_category[i].val) {
 				snd_iprintf(buffer, "%s\n", snd_ca0106_con_category[i].name);
 				break;
 			}
 		}
 		if (i >= ARRAY_SIZE(snd_ca0106_con_category)) {
 			snd_iprintf(buffer, "unknown 0x%x\n", status[1] & IEC958_AES1_CON_CATEGORY);
 		}
 		snd_iprintf(buffer, "Original: ");
 		if (status[1] & IEC958_AES1_CON_ORIGINAL) {
 			snd_iprintf(buffer, "original\n");
 		} else {
 			snd_iprintf(buffer, "1st generation\n");
 		}
 		snd_iprintf(buffer, "Clock: ");
 		switch (status[3] & IEC958_AES3_CON_CLOCK) {
 		case IEC958_AES3_CON_CLOCK_1000PPM:
 			snd_iprintf(buffer, "1000 ppm\n");
 			break;
 		case IEC958_AES3_CON_CLOCK_50PPM:
 			snd_iprintf(buffer, "50 ppm\n");
 			break;
 		case IEC958_AES3_CON_CLOCK_VARIABLE:
 			snd_iprintf(buffer, "variable pitch\n");
 			break;
 		default:
 			snd_iprintf(buffer, "unknown\n");
 			break;
 		}
 	} else {
 		snd_iprintf(buffer, "Mode: professional\n");
 		snd_iprintf(buffer, "Data: ");
 		if (!(status[0] & IEC958_AES0_NONAUDIO)) {
 			snd_iprintf(buffer, "audio\n");
 		} else {
 			snd_iprintf(buffer, "non-audio\n");
 		}
 		snd_iprintf(buffer, "Rate: ");
 		switch (status[0] & IEC958_AES0_PRO_FS) {
 		case IEC958_AES0_PRO_FS_44100:
 			snd_iprintf(buffer, "44100 Hz\n");
 			break;
 		case IEC958_AES0_PRO_FS_48000:
 			snd_iprintf(buffer, "48000 Hz\n");
 			break;
 		case IEC958_AES0_PRO_FS_32000:
 			snd_iprintf(buffer, "32000 Hz\n");
 			break;
 		default:
 			snd_iprintf(buffer, "unknown\n");
 			break;
 		}
 		snd_iprintf(buffer, "Rate Locked: ");
 		if (status[0] & IEC958_AES0_PRO_FREQ_UNLOCKED)
 			snd_iprintf(buffer, "no\n");
 		else
 			snd_iprintf(buffer, "yes\n");
 		snd_iprintf(buffer, "Emphasis: ");
 		switch (status[0] & IEC958_AES0_PRO_EMPHASIS) {
 		case IEC958_AES0_PRO_EMPHASIS_CCITT:
 			snd_iprintf(buffer, "CCITT J.17\n");
 			break;
 		case IEC958_AES0_PRO_EMPHASIS_NONE:
 			snd_iprintf(buffer, "none\n");
 			break;
 		case IEC958_AES0_PRO_EMPHASIS_5015:
 			snd_iprintf(buffer, "50/15us\n");
 			break;
 		case IEC958_AES0_PRO_EMPHASIS_NOTID:
 		default:
 			snd_iprintf(buffer, "unknown\n");
 			break;
 		}
 		snd_iprintf(buffer, "Stereophonic: ");
 		if ((status[1] & IEC958_AES1_PRO_MODE) == IEC958_AES1_PRO_MODE_STEREOPHONIC) {
 			snd_iprintf(buffer, "stereo\n");
 		} else {
 			snd_iprintf(buffer, "not indicated\n");
 		}
 		snd_iprintf(buffer, "Userbits: ");
 		switch (status[1] & IEC958_AES1_PRO_USERBITS) {
 		case IEC958_AES1_PRO_USERBITS_192:
 			snd_iprintf(buffer, "192bit\n");
 			break;
 		case IEC958_AES1_PRO_USERBITS_UDEF:
 			snd_iprintf(buffer, "user-defined\n");
 			break;
 		default:
 			snd_iprintf(buffer, "unknown\n");
 			break;
 		}
 		snd_iprintf(buffer, "Sample Bits: ");
 		switch (status[2] & IEC958_AES2_PRO_SBITS) {
 		case IEC958_AES2_PRO_SBITS_20:
 			snd_iprintf(buffer, "20 bit\n");
 			break;
 		case IEC958_AES2_PRO_SBITS_24:
 			snd_iprintf(buffer, "24 bit\n");
 			break;
 		case IEC958_AES2_PRO_SBITS_UDEF:
 			snd_iprintf(buffer, "user defined\n");
 			break;
 		default:
 			snd_iprintf(buffer, "unknown\n");
 			break;
 		}
 		snd_iprintf(buffer, "Word Length: ");
 		switch (status[2] & IEC958_AES2_PRO_WORDLEN) {
 		case IEC958_AES2_PRO_WORDLEN_22_18:
 			snd_iprintf(buffer, "22 bit or 18 bit\n");
 			break;
 		case IEC958_AES2_PRO_WORDLEN_23_19:
 			snd_iprintf(buffer, "23 bit or 19 bit\n");
 			break;
 		case IEC958_AES2_PRO_WORDLEN_24_20:
 			snd_iprintf(buffer, "24 bit or 20 bit\n");
 			break;
 		case IEC958_AES2_PRO_WORDLEN_20_16:
 			snd_iprintf(buffer, "20 bit or 16 bit\n");
 			break;
 		default:
 			snd_iprintf(buffer, "unknown\n");
 			break;
 		}
 	}
 }

 static void snd_ca0106_proc_iec958(struct snd_info_entry *entry,
 				       struct snd_info_buffer *buffer)
 {
 	struct snd_ca0106 *emu = entry->private_data;
 	u32 value;

         value = snd_ca0106_ptr_read(emu, SAMPLE_RATE_TRACKER_STATUS, 0);
 	snd_iprintf(buffer, "Status: %s, %s, %s\n",
 		  (value & 0x100000) ? "Rate Locked" : "Not Rate Locked",
 		  (value & 0x200000) ? "SPDIF Locked" : "No SPDIF Lock",
 		  (value & 0x400000) ? "Audio Valid" : "No valid audio" );
 	snd_iprintf(buffer, "Estimated sample rate: %u\n",
 		  ((value & 0xfffff) * 48000) / 0x8000 );
 	if (value & 0x200000) {
 		snd_iprintf(buffer, "IEC958/SPDIF input status:\n");
         	value = snd_ca0106_ptr_read(emu, SPDIF_INPUT_STATUS, 0);
 		snd_ca0106_proc_dump_iec958(buffer, value);
 	}

 	snd_iprintf(buffer, "\n");
 }

 static void snd_ca0106_proc_reg_write32(struct snd_info_entry *entry,
 				       struct snd_info_buffer *buffer)
 {
 	struct snd_ca0106 *emu = entry->private_data;
 	unsigned long flags;
         char line[64];
         u32 reg, val;
         while (!snd_info_get_line(buffer, line, sizeof(line))) {
                 if (sscanf(line, "%x %x", &reg, &val) != 2)
                         continue;
 		if (reg < 0x40 && val <= 0xffffffff) {
 			spin_lock_irqsave(&emu->emu_lock, flags);
 			outl(val, emu->port + (reg & 0xfffffffc));
 			spin_unlock_irqrestore(&emu->emu_lock, flags);
 		}
         }
 }

 static void snd_ca0106_proc_reg_read32(struct snd_info_entry *entry,
 				       struct snd_info_buffer *buffer)
 {
 	struct snd_ca0106 *emu = entry->private_data;
 	unsigned long value;
 	unsigned long flags;
 	int i;
 	snd_iprintf(buffer, "Registers:\n\n");
 	for(i = 0; i < 0x20; i+=4) {
 		spin_lock_irqsave(&emu->emu_lock, flags);
 		value = inl(emu->port + i);
 		spin_unlock_irqrestore(&emu->emu_lock, flags);
 		snd_iprintf(buffer, "Register %02X: %08lX\n", i, value);
 	}
 }

 static void snd_ca0106_proc_reg_read16(struct snd_info_entry *entry,
 				       struct snd_info_buffer *buffer)
 {
 	struct snd_ca0106 *emu = entry->private_data;
         unsigned int value;
 	unsigned long flags;
 	int i;
 	snd_iprintf(buffer, "Registers:\n\n");
 	for(i = 0; i < 0x20; i+=2) {
 		spin_lock_irqsave(&emu->emu_lock, flags);
 		value = inw(emu->port + i);
 		spin_unlock_irqrestore(&emu->emu_lock, flags);
 		snd_iprintf(buffer, "Register %02X: %04X\n", i, value);
 	}
 }

 static void snd_ca0106_proc_reg_read8(struct snd_info_entry *entry,
 				       struct snd_info_buffer *buffer)
 {
 	struct snd_ca0106 *emu = entry->private_data;
 	unsigned int value;
 	unsigned long flags;
 	int i;
 	snd_iprintf(buffer, "Registers:\n\n");
 	for(i = 0; i < 0x20; i+=1) {
 		spin_lock_irqsave(&emu->emu_lock, flags);
 		value = inb(emu->port + i);
 		spin_unlock_irqrestore(&emu->emu_lock, flags);
 		snd_iprintf(buffer, "Register %02X: %02X\n", i, value);
 	}
 }

 static void snd_ca0106_proc_reg_read1(struct snd_info_entry *entry,
 				       struct snd_info_buffer *buffer)
 {
 	struct snd_ca0106 *emu = entry->private_data;
 	unsigned long value;
 	int i,j;

 	snd_iprintf(buffer, "Registers\n");
 	for(i = 0; i < 0x40; i++) {
 		snd_iprintf(buffer, "%02X: ",i);
 		for (j = 0; j < 4; j++) {
                   value = snd_ca0106_ptr_read(emu, i, j);
 		  snd_iprintf(buffer, "%08lX ", value);
                 }
 	        snd_iprintf(buffer, "\n");
 	}
 }

 static void snd_ca0106_proc_reg_read2(struct snd_info_entry *entry,
 				       struct snd_info_buffer *buffer)
 {
 	struct snd_ca0106 *emu = entry->private_data;
 	unsigned long value;
 	int i,j;

 	snd_iprintf(buffer, "Registers\n");
 	for(i = 0x40; i < 0x80; i++) {
 		snd_iprintf(buffer, "%02X: ",i);
 		for (j = 0; j < 4; j++) {
                   value = snd_ca0106_ptr_read(emu, i, j);
 		  snd_iprintf(buffer, "%08lX ", value);
                 }
 	        snd_iprintf(buffer, "\n");
 	}
 }

 static void snd_ca0106_proc_reg_write(struct snd_info_entry *entry,
 				       struct snd_info_buffer *buffer)
 {
 	struct snd_ca0106 *emu = entry->private_data;
         char line[64];
         unsigned int reg, channel_id , val;
         while (!snd_info_get_line(buffer, line, sizeof(line))) {
                 if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
                         continue;
 		if (reg < 0x80 && val <= 0xffffffff && channel_id <= 3)
                         snd_ca0106_ptr_write(emu, reg, channel_id, val);
         }
 }

 static void snd_ca0106_proc_i2c_write(struct snd_info_entry *entry,
 				       struct snd_info_buffer *buffer)
 {
 	struct snd_ca0106 *emu = entry->private_data;
         char line[64];
         unsigned int reg, val;
         while (!snd_info_get_line(buffer, line, sizeof(line))) {
                 if (sscanf(line, "%x %x", &reg, &val) != 2)
                         continue;
                 if ((reg <= 0x7f) || (val <= 0x1ff)) {
                         snd_ca0106_i2c_write(emu, reg, val);
 		}
         }
 }

 int snd_ca0106_proc_init(struct snd_ca0106 *emu)
 {
 	struct snd_info_entry *entry;

 	if(! snd_card_proc_new(emu->card, "iec958", &entry))
 		snd_info_set_text_ops(entry, emu, snd_ca0106_proc_iec958);
 	if(! snd_card_proc_new(emu->card, "ca0106_reg32", &entry)) {
 		snd_info_set_text_ops(entry, emu, snd_ca0106_proc_reg_read32);
 		entry->c.text.write = snd_ca0106_proc_reg_write32;
 		entry->mode |= S_IWUSR;
 	}
 	if(! snd_card_proc_new(emu->card, "ca0106_reg16", &entry))
 		snd_info_set_text_ops(entry, emu, snd_ca0106_proc_reg_read16);
 	if(! snd_card_proc_new(emu->card, "ca0106_reg8", &entry))
 		snd_info_set_text_ops(entry, emu, snd_ca0106_proc_reg_read8);
 	if(! snd_card_proc_new(emu->card, "ca0106_regs1", &entry)) {
 		snd_info_set_text_ops(entry, emu, snd_ca0106_proc_reg_read1);
 		entry->c.text.write = snd_ca0106_proc_reg_write;
 		entry->mode |= S_IWUSR;
 	}
 	if(! snd_card_proc_new(emu->card, "ca0106_i2c", &entry)) {
 		entry->c.text.write = snd_ca0106_proc_i2c_write;
 		entry->private_data = emu;
 		entry->mode |= S_IWUSR;
 	}
 	if(! snd_card_proc_new(emu->card, "ca0106_regs2", &entry))
 		snd_info_set_text_ops(entry, emu, snd_ca0106_proc_reg_read2);
 	return 0;
 }

 #endif /* CONFIG_PROC_FS */
	/*
	* Copyright (c) 2004 James Courtier-Dutton <James@superbug.demon.co.uk>
	* Driver CA0106 chips. e.g. Sound Blaster Audigy LS and Live 24bit
	* Version: 0.0.18
	*
	* FEATURES currently supported:
	* See ca0106_main.c for features.
	*
	* Changelog:
	* Support interrupts per period.
	* Removed noise from Center/LFE channel when in Analog mode.
	* Rename and remove mixer controls.
	* 0.0.6
	* Use separate card based DMA buffer for periods table list.
	* 0.0.7
	* Change remove and rename ctrls into lists.
	* 0.0.8
	* Try to fix capture sources.
	* 0.0.9
	* Fix AC3 output.
	* Enable S32_LE format support.
	* 0.0.10
	* Enable playback 48000 and 96000 rates. (Rates other that these do not work, even with "plug:front".)
	* 0.0.11
	* Add Model name recognition.
	* 0.0.12
	* Correct interrupt timing. interrupt at end of period, instead of in the middle of a playback period.
	* Remove redundent "voice" handling.
	* 0.0.13
	* Single trigger call for multi channels.
	* 0.0.14
	* Set limits based on what the sound card hardware can do.
	* playback periods_min=2, periods_max=8
	* capture hw constraints require period_size = n * 64 bytes.
	* playback hw constraints require period_size = n * 64 bytes.
	* 0.0.15
	* Separate ca0106.c into separate functional .c files.
	* 0.0.16
	* Modified Copyright message.
	* 0.0.17
	* Add iec958 file in proc file system to show status of SPDIF in.
	* 0.0.18
	* Implement support for Line-in capture on SB Live 24bit.
	*
	* This code was initially based on code from ALSA's emu10k1x.c which is:
	* Copyright (c) by Francisco Moraes <fmoraes@nc.rr.com>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*
	*/
	#include <linux/delay.h>
	#include <linux/init.h>
	#include <linux/interrupt.h>
	#include <linux/moduleparam.h>
	#include <sound/core.h>
	#include <sound/initval.h>
	#include <sound/pcm.h>
	#include <sound/ac97_codec.h>
	#include <sound/info.h>
	#include <sound/asoundef.h>
	#include <asm/io.h>

	#include "ca0106.h"


	#ifdef CONFIG_PROC_FS

	struct snd_ca0106_category_str {
	int val;
	const char *name;
	};

	static struct snd_ca0106_category_str snd_ca0106_con_category[] = {
	{ IEC958_AES1_CON_DAT, "DAT" },
	{ IEC958_AES1_CON_VCR, "VCR" },
	{ IEC958_AES1_CON_MICROPHONE, "microphone" },
	{ IEC958_AES1_CON_SYNTHESIZER, "synthesizer" },
	{ IEC958_AES1_CON_RATE_CONVERTER, "rate converter" },
	{ IEC958_AES1_CON_MIXER, "mixer" },
	{ IEC958_AES1_CON_SAMPLER, "sampler" },
	{ IEC958_AES1_CON_PCM_CODER, "PCM coder" },
	{ IEC958_AES1_CON_IEC908_CD, "CD" },
	{ IEC958_AES1_CON_NON_IEC908_CD, "non-IEC908 CD" },
	{ IEC958_AES1_CON_GENERAL, "general" },
	};


	static void snd_ca0106_proc_dump_iec958( struct snd_info_buffer *buffer, u32 value)
	{
	int i;
	u32 status[4];
	status[0] = value & 0xff;
	status[1] = (value >> 8) & 0xff;
	status[2] = (value >> 16) & 0xff;
	status[3] = (value >> 24) & 0xff;

	if (! (status[0] & IEC958_AES0_PROFESSIONAL)) {
	/* consumer */
	snd_iprintf(buffer, "Mode: consumer\n");
	snd_iprintf(buffer, "Data: ");
	if (!(status[0] & IEC958_AES0_NONAUDIO)) {
	snd_iprintf(buffer, "audio\n");
	} else {
	snd_iprintf(buffer, "non-audio\n");
	}
	snd_iprintf(buffer, "Rate: ");
	switch (status[3] & IEC958_AES3_CON_FS) {
	case IEC958_AES3_CON_FS_44100:
	snd_iprintf(buffer, "44100 Hz\n");
	break;
	case IEC958_AES3_CON_FS_48000:
	snd_iprintf(buffer, "48000 Hz\n");
	break;
	case IEC958_AES3_CON_FS_32000:
	snd_iprintf(buffer, "32000 Hz\n");
	break;
	default:
	snd_iprintf(buffer, "unknown\n");
	break;
	}
	snd_iprintf(buffer, "Copyright: ");
	if (status[0] & IEC958_AES0_CON_NOT_COPYRIGHT) {
	snd_iprintf(buffer, "permitted\n");
	} else {
	snd_iprintf(buffer, "protected\n");
	}
	snd_iprintf(buffer, "Emphasis: ");
	if ((status[0] & IEC958_AES0_CON_EMPHASIS) != IEC958_AES0_CON_EMPHASIS_5015) {
	snd_iprintf(buffer, "none\n");
	} else {
	snd_iprintf(buffer, "50/15us\n");
	}
	snd_iprintf(buffer, "Category: ");
	for (i = 0; i < ARRAY_SIZE(snd_ca0106_con_category); i++) {
	if ((status[1] & IEC958_AES1_CON_CATEGORY) == snd_ca0106_con_category[i].val) {
	snd_iprintf(buffer, "%s\n", snd_ca0106_con_category[i].name);
	break;
	}
	}
	if (i >= ARRAY_SIZE(snd_ca0106_con_category)) {
	snd_iprintf(buffer, "unknown 0x%x\n", status[1] & IEC958_AES1_CON_CATEGORY);
	}
	snd_iprintf(buffer, "Original: ");
	if (status[1] & IEC958_AES1_CON_ORIGINAL) {
	snd_iprintf(buffer, "original\n");
	} else {
	snd_iprintf(buffer, "1st generation\n");
	}
	snd_iprintf(buffer, "Clock: ");
	switch (status[3] & IEC958_AES3_CON_CLOCK) {
	case IEC958_AES3_CON_CLOCK_1000PPM:
	snd_iprintf(buffer, "1000 ppm\n");
	break;
	case IEC958_AES3_CON_CLOCK_50PPM:
	snd_iprintf(buffer, "50 ppm\n");
	break;
	case IEC958_AES3_CON_CLOCK_VARIABLE:
	snd_iprintf(buffer, "variable pitch\n");
	break;
	default:
	snd_iprintf(buffer, "unknown\n");
	break;
	}
	} else {
	snd_iprintf(buffer, "Mode: professional\n");
	snd_iprintf(buffer, "Data: ");
	if (!(status[0] & IEC958_AES0_NONAUDIO)) {
	snd_iprintf(buffer, "audio\n");
	} else {
	snd_iprintf(buffer, "non-audio\n");
	}
	snd_iprintf(buffer, "Rate: ");
	switch (status[0] & IEC958_AES0_PRO_FS) {
	case IEC958_AES0_PRO_FS_44100:
	snd_iprintf(buffer, "44100 Hz\n");
	break;
	case IEC958_AES0_PRO_FS_48000:
	snd_iprintf(buffer, "48000 Hz\n");
	break;
	case IEC958_AES0_PRO_FS_32000:
	snd_iprintf(buffer, "32000 Hz\n");
	break;
	default:
	snd_iprintf(buffer, "unknown\n");
	break;
	}
	snd_iprintf(buffer, "Rate Locked: ");
	if (status[0] & IEC958_AES0_PRO_FREQ_UNLOCKED)
	snd_iprintf(buffer, "no\n");
	else
	snd_iprintf(buffer, "yes\n");
	snd_iprintf(buffer, "Emphasis: ");
	switch (status[0] & IEC958_AES0_PRO_EMPHASIS) {
	case IEC958_AES0_PRO_EMPHASIS_CCITT:
	snd_iprintf(buffer, "CCITT J.17\n");
	break;
	case IEC958_AES0_PRO_EMPHASIS_NONE:
	snd_iprintf(buffer, "none\n");
	break;
	case IEC958_AES0_PRO_EMPHASIS_5015:
	snd_iprintf(buffer, "50/15us\n");
	break;
	case IEC958_AES0_PRO_EMPHASIS_NOTID:
	default:
	snd_iprintf(buffer, "unknown\n");
	break;
	}
	snd_iprintf(buffer, "Stereophonic: ");
	if ((status[1] & IEC958_AES1_PRO_MODE) == IEC958_AES1_PRO_MODE_STEREOPHONIC) {
	snd_iprintf(buffer, "stereo\n");
	} else {
	snd_iprintf(buffer, "not indicated\n");
	}
	snd_iprintf(buffer, "Userbits: ");
	switch (status[1] & IEC958_AES1_PRO_USERBITS) {
	case IEC958_AES1_PRO_USERBITS_192:
	snd_iprintf(buffer, "192bit\n");
	break;
	case IEC958_AES1_PRO_USERBITS_UDEF:
	snd_iprintf(buffer, "user-defined\n");
	break;
	default:
	snd_iprintf(buffer, "unknown\n");
	break;
	}
	snd_iprintf(buffer, "Sample Bits: ");
	switch (status[2] & IEC958_AES2_PRO_SBITS) {
	case IEC958_AES2_PRO_SBITS_20:
	snd_iprintf(buffer, "20 bit\n");
	break;
	case IEC958_AES2_PRO_SBITS_24:
	snd_iprintf(buffer, "24 bit\n");
	break;
	case IEC958_AES2_PRO_SBITS_UDEF:
	snd_iprintf(buffer, "user defined\n");
	break;
	default:
	snd_iprintf(buffer, "unknown\n");
	break;
	}
	snd_iprintf(buffer, "Word Length: ");
	switch (status[2] & IEC958_AES2_PRO_WORDLEN) {
	case IEC958_AES2_PRO_WORDLEN_22_18:
	snd_iprintf(buffer, "22 bit or 18 bit\n");
	break;
	case IEC958_AES2_PRO_WORDLEN_23_19:
	snd_iprintf(buffer, "23 bit or 19 bit\n");
	break;
	case IEC958_AES2_PRO_WORDLEN_24_20:
	snd_iprintf(buffer, "24 bit or 20 bit\n");
	break;
	case IEC958_AES2_PRO_WORDLEN_20_16:
	snd_iprintf(buffer, "20 bit or 16 bit\n");
	break;
	default:
	snd_iprintf(buffer, "unknown\n");
	break;
	}
	}
	}

	static void snd_ca0106_proc_iec958(struct snd_info_entry *entry,
	struct snd_info_buffer *buffer)
	{
	struct snd_ca0106 *emu = entry->private_data;
	u32 value;

	value = snd_ca0106_ptr_read(emu, SAMPLE_RATE_TRACKER_STATUS, 0);
	snd_iprintf(buffer, "Status: %s, %s, %s\n",
	(value & 0x100000) ? "Rate Locked" : "Not Rate Locked",
	(value & 0x200000) ? "SPDIF Locked" : "No SPDIF Lock",
	(value & 0x400000) ? "Audio Valid" : "No valid audio" );
	snd_iprintf(buffer, "Estimated sample rate: %u\n",
	((value & 0xfffff) * 48000) / 0x8000 );
	if (value & 0x200000) {
	snd_iprintf(buffer, "IEC958/SPDIF input status:\n");
	value = snd_ca0106_ptr_read(emu, SPDIF_INPUT_STATUS, 0);
	snd_ca0106_proc_dump_iec958(buffer, value);
	}

	snd_iprintf(buffer, "\n");
	}

	static void snd_ca0106_proc_reg_write32(struct snd_info_entry *entry,
	struct snd_info_buffer *buffer)
	{
	struct snd_ca0106 *emu = entry->private_data;
	unsigned long flags;
	char line[64];
	u32 reg, val;
	while (!snd_info_get_line(buffer, line, sizeof(line))) {
	if (sscanf(line, "%x %x", &reg, &val) != 2)
	continue;
	if (reg < 0x40 && val <= 0xffffffff) {
	spin_lock_irqsave(&emu->emu_lock, flags);
	outl(val, emu->port + (reg & 0xfffffffc));
	spin_unlock_irqrestore(&emu->emu_lock, flags);
	}
	}
	}

	static void snd_ca0106_proc_reg_read32(struct snd_info_entry *entry,
	struct snd_info_buffer *buffer)
	{
	struct snd_ca0106 *emu = entry->private_data;
	unsigned long value;
	unsigned long flags;
	int i;
	snd_iprintf(buffer, "Registers:\n\n");
	for(i = 0; i < 0x20; i+=4) {
	spin_lock_irqsave(&emu->emu_lock, flags);
	value = inl(emu->port + i);
	spin_unlock_irqrestore(&emu->emu_lock, flags);
	snd_iprintf(buffer, "Register %02X: %08lX\n", i, value);
	}
	}

	static void snd_ca0106_proc_reg_read16(struct snd_info_entry *entry,
	struct snd_info_buffer *buffer)
	{
	struct snd_ca0106 *emu = entry->private_data;
	unsigned int value;
	unsigned long flags;
	int i;
	snd_iprintf(buffer, "Registers:\n\n");
	for(i = 0; i < 0x20; i+=2) {
	spin_lock_irqsave(&emu->emu_lock, flags);
	value = inw(emu->port + i);
	spin_unlock_irqrestore(&emu->emu_lock, flags);
	snd_iprintf(buffer, "Register %02X: %04X\n", i, value);
	}
	}

	static void snd_ca0106_proc_reg_read8(struct snd_info_entry *entry,
	struct snd_info_buffer *buffer)
	{
	struct snd_ca0106 *emu = entry->private_data;
	unsigned int value;
	unsigned long flags;
	int i;
	snd_iprintf(buffer, "Registers:\n\n");
	for(i = 0; i < 0x20; i+=1) {
	spin_lock_irqsave(&emu->emu_lock, flags);
	value = inb(emu->port + i);
	spin_unlock_irqrestore(&emu->emu_lock, flags);
	snd_iprintf(buffer, "Register %02X: %02X\n", i, value);
	}
	}

	static void snd_ca0106_proc_reg_read1(struct snd_info_entry *entry,
	struct snd_info_buffer *buffer)
	{
	struct snd_ca0106 *emu = entry->private_data;
	unsigned long value;
	int i,j;

	snd_iprintf(buffer, "Registers\n");
	for(i = 0; i < 0x40; i++) {
	snd_iprintf(buffer, "%02X: ",i);
	for (j = 0; j < 4; j++) {
	value = snd_ca0106_ptr_read(emu, i, j);
	snd_iprintf(buffer, "%08lX ", value);
	}
	snd_iprintf(buffer, "\n");
	}
	}

	static void snd_ca0106_proc_reg_read2(struct snd_info_entry *entry,
	struct snd_info_buffer *buffer)
	{
	struct snd_ca0106 *emu = entry->private_data;
	unsigned long value;
	int i,j;

	snd_iprintf(buffer, "Registers\n");
	for(i = 0x40; i < 0x80; i++) {
	snd_iprintf(buffer, "%02X: ",i);
	for (j = 0; j < 4; j++) {
	value = snd_ca0106_ptr_read(emu, i, j);
	snd_iprintf(buffer, "%08lX ", value);
	}
	snd_iprintf(buffer, "\n");
	}
	}

	static void snd_ca0106_proc_reg_write(struct snd_info_entry *entry,
	struct snd_info_buffer *buffer)
	{
	struct snd_ca0106 *emu = entry->private_data;
	char line[64];
	unsigned int reg, channel_id , val;
	while (!snd_info_get_line(buffer, line, sizeof(line))) {
	if (sscanf(line, "%x %x %x", &reg, &channel_id, &val) != 3)
	continue;
	if (reg < 0x80 && val <= 0xffffffff && channel_id <= 3)
	snd_ca0106_ptr_write(emu, reg, channel_id, val);
	}
	}

	static void snd_ca0106_proc_i2c_write(struct snd_info_entry *entry,
	struct snd_info_buffer *buffer)
	{
	struct snd_ca0106 *emu = entry->private_data;
	char line[64];
	unsigned int reg, val;
	while (!snd_info_get_line(buffer, line, sizeof(line))) {
	if (sscanf(line, "%x %x", &reg, &val) != 2)
	continue;
	if ((reg <= 0x7f) \|\| (val <= 0x1ff)) {
	snd_ca0106_i2c_write(emu, reg, val);
	}
	}
	}

	int snd_ca0106_proc_init(struct snd_ca0106 *emu)
	{
	struct snd_info_entry *entry;

	if(! snd_card_proc_new(emu->card, "iec958", &entry))
	snd_info_set_text_ops(entry, emu, snd_ca0106_proc_iec958);
	if(! snd_card_proc_new(emu->card, "ca0106_reg32", &entry)) {
	snd_info_set_text_ops(entry, emu, snd_ca0106_proc_reg_read32);
	entry->c.text.write = snd_ca0106_proc_reg_write32;
	entry->mode \|= S_IWUSR;
	}
	if(! snd_card_proc_new(emu->card, "ca0106_reg16", &entry))
	snd_info_set_text_ops(entry, emu, snd_ca0106_proc_reg_read16);
	if(! snd_card_proc_new(emu->card, "ca0106_reg8", &entry))
	snd_info_set_text_ops(entry, emu, snd_ca0106_proc_reg_read8);
	if(! snd_card_proc_new(emu->card, "ca0106_regs1", &entry)) {
	snd_info_set_text_ops(entry, emu, snd_ca0106_proc_reg_read1);
	entry->c.text.write = snd_ca0106_proc_reg_write;
	entry->mode \|= S_IWUSR;
	}
	if(! snd_card_proc_new(emu->card, "ca0106_i2c", &entry)) {
	entry->c.text.write = snd_ca0106_proc_i2c_write;
	entry->private_data = emu;
	entry->mode \|= S_IWUSR;
	}
	if(! snd_card_proc_new(emu->card, "ca0106_regs2", &entry))
	snd_info_set_text_ops(entry, emu, snd_ca0106_proc_reg_read2);
	return 0;
	}

	#endif /* CONFIG_PROC_FS */